# -*- coding: utf-8 -*-
n=[]
d={"6-1":{"买菜":19,"打车":40,"淘宝购物":20.3,"冷饮":3.5},
   "6-2":{"买菜":9,"打车":4,"充话费":100,"电费":30},
   "6-3":{"买笔记本":4.9,"买笔记本电脑":6998,"水费":53,"被骗":99}}
for(x,y)in d.items():
    for(a,b) in y.items():
        n.append(b)
        c=max(n)
   
print(c)
       
       
      

